Numerical Simulation Study on Gas Flow Distribution of a Moving Bed of Limestone Particles

2010 ◽  
Author(s):  
Dong-jie Yan ◽  
Xue-min Huang ◽  
Ya Yu
Keyword(s):  
Numerical Simulation ◽  
Simulation Study ◽  
Gas Flow ◽  
Flow Distribution ◽  
Moving Bed

Numerical Simulation and Application of Gas Flow Distribution of ESP Transformed to Baghouse in Cement Kiln Head

2011 ◽  
Vol 130-134 ◽  
pp. 2715-2718
Author(s):  
Xiao Qing Dang ◽  
Hong Sheng Hu ◽  
Pang Min
Keyword(s):  
Numerical Simulation ◽  
Gas Flow ◽  
Dust Emission ◽  
Flow Distribution ◽  
Cement Kiln ◽  
Dust Collector ◽  
Air Volume ◽  
Configuration Parameter ◽  
Computational Fluid Dynamics Cfd ◽  
Cfd Method

By using Computational Fluid Dynamics (CFD) method,numerical simulation of gas flow distribution of ESP transform to baghouse in cement kiln head of 6000 t/d production. Through numerically simulation,air volume of every filter bag cell and head-on gas flow velocity distribution of filter bag were displayed. By adjusting the configuration parameter of the gas flow distribution device during the numerical simulation, it gives the result that the manner of installing gas flow distribution device, when the windage of the air volume of every filter bag cell is not more than 5% and the press drop of the dust collector with clean filter bag is 300 Pa. The calculated results showed good agreement with the measured results in the field. The simulation results were carried out by transformation. The dust emission concentration of precipitator is 26.6 mg/m3, and the dust running resistance is less than 1000Pa, can achieve the performance assessment requirements.

The Simulation and Experiment Study on the Gas Flow in the No-Loaded and Cold Vacuum High-Pressure Gas Quenching Furnace

2011 ◽  
Vol 48-49 ◽  
pp. 1310-1314
Author(s):  
Zhi Jian Wang ◽  
Xiao Feng Shang
Keyword(s):  
Numerical Simulation ◽  
High Pressure ◽  
Gas Flow ◽  
Flow Distribution ◽  
Simulation Method ◽  
Flow State ◽  
Gas Quenching ◽  
Simulation And Experiment ◽  
Simulation Results ◽  
The One

In order to learn gas flow state in the vacuum high pressure gas quenching furnace, this paper simulates and tests the gas flow under the no-loaded and cold state. Hot wire anemometer is used to measure the speeds of some feature points, on the one hand to provide boundary conditions for the numerical simulation, and on the other hand to compare with the numerical simulation results. FLUENT software is used to simulate the gas flow of nozzle-type vacuum high-pressure gas quenching furnace. The results show that at the center of the furnace appears high-pressure low-speed zone in which is resulted by the gas collision there, and the vortex also appears in the area around the furnace. The results mean that the cooling rate of works will be slow there. Different exit velocities of five nozzles cause the uneven flow distribution, which will affect the cooling uniformity of works. The comparison between the simulation results and the measured results shows that the error is within 10%. It means that numerical simulation method to predict gas flow is feasible and the results are reliable in high pressure gas quenching furnace.

Study on Flow Properties of Straightener in Pulse Tube Refrigerator with Numerical Simulation

2013 ◽  
Vol 281 ◽  
pp. 268-271
Author(s):  
Wen Qing Liang ◽  
Hua Qian ◽  
Xiao Hong Zheng ◽  
Bin Xu ◽  
Lu Lu Shi
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Pressure Drop ◽  
Gas Flow ◽  
Flow Distribution ◽  
Pulse Tube ◽  
Flow Properties ◽  
Improve Performance ◽  
Pulse Tube Refrigerator ◽  
Key Parameter

The straightener of pulse tube refrigerator (PTR) can change gas flow distribution in the tube and improve performance of PTR .In this paper numerical simulation is used to study and optimize the property parameters of straightener with helium as work fluid. The straightener is treated as porous media. The key parameter fk. is defined as the ratio of streamwise and transverse permeabilities. The smallest length of straightener is optimized by changing the value of fk. The result shows that straightener can change gas flow distribution in tube and improve performance of PTR. fk. is bigger, the length of straightener is shorter and streamwise pressure drop is smaller.

NUMERICAL SIMULATION STUDY ON BIONIC MUCUS DRAG REDUCTION OF UNDERWATER VEHICLE

2020 ◽  
Vol 47 (4) ◽  
pp. 371-385
Author(s):  
Kaisheng Zhang ◽  
Chaofan Ma ◽  
Baocheng Zhang ◽  
Bo Zhao ◽  
Qiang Wang
Keyword(s):  
Numerical Simulation ◽  
Drag Reduction ◽  
Simulation Study ◽  
Underwater Vehicle
Sign in / Sign up

Export Citation Format

Share Document